Shipping-plug for projectiles.



H. D. CLINTON.

SHIPPING PLUG FOR PROJECTILES. APPLICATION FILED MAY 16. 1918.

1 279,264. Patented Sept. 17, 1918.

X W L HARRY D. CLINTON, 0F WHITNEY POINT, NEW YORK.

SHIPPING-IELUG FOR PROJECTILES.

Application filed May 16,

To all whom it may concern:

Be it known that I, HARRYD. CLINTON, a citizen of the United States, residing at IVhitney Point, in the county of Broome and State of New York, have invented'certain new and useful Improvements in Shipping- I'lugs for Projectiles; and I do hereby declare the. following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to shipping plugs or fuse hole closures for projectiles.

It is a common practice in preparing projectiles for shipment to screw into the open end or mouth of the projectile or shell case a wooden threaded plug treated with paraflin to prevent absorption of moisture and swelling of the wood which often renders it' difficult if not impossible to remove the plug, and such treatment withparaflin is not only unsatisfactory and expensive, but the wood is liable to be affected by water, thus causing the plug to swell and seriously interfere with if not prevent its removal. The object of my invention is to provide a wooden plug of the character referred to which may be easily screwed into the interiorly threaded end or mouth of a projectile or shell case and unscrewed, and which cannot be affected by water so as to interfere with the removal of the plug or its insertion as desired. v

The invention will first be hereinafter more particularlv described, with reference to the accompanying drawings, which. form a part of this specification, and then pointed out in the claims at the end of the description.

In said drawings Figure 1 is asectional of the chambered end of a shell case or projectile having an open interiorly threaded mouth with my improved wooden plug screwed therein; the. plug being shown in side elevation;

Fig. 2, is a plan view of the plug;

Fig. 3, is a vertical sectional view of said plug, taken on the line 33 of Fig. 2, and

Fig. 4, is a vertical sectional view of the plug, taken on the line 4-4 of Fig. 2.

Referring to said drawings, in which the same reference letters are used to denote correspondin parts in different views, the letter A may denote the chambered end of a projectile or shell case having an open interiorly screw threaded mouth to receive a- Specification of Letters Patent.

Patented Sept. 17, 1918. 1918. Serial No. 234,894.

similar exteriorly threaded plug to be screwed therein. B denotes a screw-plug adapted to fit snugly within the bore or mouth of the shell and having an annular marginal flange or enlarged end portion 6 adapted to rest upon the end of the shell and close its open mouth. In the body 6 of the plug is embedded a pin C having pointed ends 0 adapted to engage the grooves of the thread in the shell case or projectile so that it may be screwed therein, in the usual manner of screwing an exteriorlv threaded member into an interiorly threaded member for uniting the two members and binding them. together. The intermediate portion of the pin C may be flattened, asshown, or otherwise shaped to insure a firm hold that will revent the pin from coming out or working loose in the hole through the body of the plug in which it is inserted, so that one end may project to a greater distance than the other end thereof from the body of the plug and interfere with its insertion in the mouth of the shell case.

It will be understood, of course, that the form of the pin in cross-section may be varied, though a flattened intermediate portion is preferable, and two or more pins with projecting ends or equivalent projections may be emploved for accomplishing the desired resul Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A shell case or projectile having an interiorly threaded open end and a closure therefor consisting of a plug having an exteriorly smooth surface and a pin inserted through the body of the plug and having its ends projecting into the grooves of the thread, whereby the plug may be screwed into the case and firmly secured thereto.

2. A screw-plug fora shell case or projectile having a cylindrical threadless body adapted to fit the open mouth of the shell case, and a pin extending through said body and having pointed ends pro ecting therefrom and adapted to engage the grooves of the thread for screwing the plug into said mouth.

3. A device of the character described comprising a shell case or projectile having an interiorly threaded open mouth or end portion and a wooden plug screwed therein, said plug having a cylindrical threadless bodyv ti fittlng snugly within the threaded mouth of said projectile and hay A In testimony whereof 1 afiix my signature ing a hole therethrough, and a pin in said in the presence of two Witnesses.

hole having projecting ends en aging the grooves of the thread for screwing, said plug HARRY CLINTON 5 lnto said mouth; the intermediate portion of Witnesses:

said pin being flattened to insure its reten- R. P. SMITH, tion in the plug. Y ROWE R. LAND. 

